Infinity 4629CFP 180W (Peak) 4 x 6 -Inch Custom Fit Two-Way Plate Speakers (Pair) The Kappa 462.9cfp 4-Inchx6-Inch plate speakers feature light, but stiff woven glass-fiber woofer cones that won't flex or distort. Plus One woofer cones This patent pending technology deliver a cone with more surface area than competing models of the same size.